Systems Administrator

System Administrator

Job Location: Canberra (ACT)

We work in a thriving sector – one that puts us at the forefront of exciting and meaningful work. Every day we push boundaries to produce some of the world’s most innovative and ground breaking technology. Individually we all contribute to our success. Collectively we make the impossible possible.

Recognised for delivering projects of global and national significance that help keep Australia safe, it is our shared passion that shapes our culture, and our people that make it a great place to work.

Who we are:

Join BAE Systems and you’ll be part of something bigger. As a valued member of our global colleague network, you’ll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You’ll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow – shaping a safer future, for all of us.

From the depths of the ocean, to the far reaches of space – there’s no limit to where a career at BAE Systems could take you.

Role Description

We are seeking an experienced System Administrator to join our team and play a key role in maintaining and enhancing critical enterprise infrastructure.

This is an exciting opportunity for an experienced infrastructure professional who enjoys working across a broad technology landscape, including Windows and Linux servers, networking, virtualisation, cyber security, automation, storage, and monitoring platforms. You’ll thrive in a complex, mission-critical environment where reliability, security, and continuous improvement are paramount.

As part of a highly skilled team, you will be responsible for ensuring the performance, availability, and security of a hybrid infrastructure environment while contributing to ongoing modernisation and automation initiatives. You are a problem-solver with strong attention to detail and the ability to work across multiple domains. You enjoy troubleshooting complex issues and continuously improving systems and processes.

Core Duties:

• Design, administer, and support enterprise infrastructure, including Active Directory, identity, and authentication services.
• Manage Group Policy, endpoint management, and patching activities across the environment.
• Maintain and troubleshoot network infrastructure, including Cisco technologies, VLANs, routing, and firewalls.
• Monitor, investigate, and respond to security events using Splunk, SIEM platforms, and industry best practices.
• Support and optimise VMware ESXi and vCenter environments, including performance tuning, resilience, and disaster recovery capabilities.
• Manage physical infrastructure, including servers, hardware, cabling, and power and cooling systems.
• Administer enterprise storage and backup solutions, including SAN/NAS technologies, RAID configurations, and Veeam or equivalent products.
• Support and maintain Red Hat Enterprise Linux (RHEL) systems, including Active Directory integration, hardening, patching, and troubleshooting.
• Develop and maintain automation solutions using PowerShell and Bash scripting.
• Implement and enhance monitoring and observability platforms, providing dashboards, reporting, and root cause analysis.
• Administer and support Atlassian tools, including Jira, Confluence, Bitbucket, and Bamboo.
• Contribute to continuous improvement initiatives that enhance security, operational efficiency, and system reliability.

About YOU

You are a technically versatile and solutions-focused professional with a passion for infrastructure, automation, and operational excellence. You enjoy solving complex technical challenges, collaborating across teams, and working in environments where security and reliability are essential.

• Bachelor’s degree in computer science, Information Technology, or a related discipline (or equivalent practical experience)
• Strong experience across Windows Server, AD, and Group Policy
• Hands-on experience administering enterprise Linux environments, with Red Hat Enterprise Linux expertise considered highly desirable
• Demonstrated experience with Linux system hardening, patching, troubleshooting, and performance tuning
• Solid networking knowledge with Cisco technologies
• Hands-on experience with VMware environments
• Proven experience with Splunk or SIEM platforms
• Exposure to Atlassian ecosystem
• Exposure to hybrid cloud or Azure-hosted Linux workloads is desirable
• Experience working within Defence or highly regulated security environments is advantageous
• Must hold or be eligible to obtain NV2 Defence Security Clearance
• Eligibility to comply with International Traffic in Arms (ITAR) regulations

Why BAE Systems?

Here you’ll build a career with purpose and limitless possibilities. With lifelong learning and meaningful work – this is a place where you can grow your career with confidence and be empowered to be your best. You’ll be recognised for your contribution and enjoy rewards tailored to what’s most important to you and your family – support for your financial and personal wellbeing, as well as a balanced lifestyle. In an environment embracing sustainable ways of working and with a strong sense of shared purpose, our supportive culture is a place you can feel you belong and proud of the difference you make.

A place where everyone can thrive

We’re committed to building an inclusive workplace where everyone feels valued and supported. We know that a diversity of backgrounds, perspectives and experiences strengthens our teams and is vital to the work we do.

We support our veteran community through VetNet Australia, along with initiatives such as Reserve Service Leave, a Veteran Mentoring Program, and partner-supported programs.

We welcome applications from all candidates and strongly encourage Aboriginal and Torres Strait Islander peoples to apply.

We are proud to be recognised as an employer of choice for women by WORK180 and recipients of the Benchmarcx Top Employer for Candidate Experience Excellence 2026. As members of the Circle Back Initiative, we commit to responding to every applicant.

If you require any reasonable adjustments during the recruitment process, please contact our recruitment team to discuss the support you may need. You can also connect with us via Careers and Employment.

Security statement

Please note, as a defence security clearance is required for this role, applicants must be Australian citizens and either possess or be eligible to obtain and maintain one. Further information regarding security clearances.